kubernetes/staging/src/k8s.io/apiextensions-apiserver/pkg/apiserver/schema/pruning/algorithm.go

// PruneWithOptions removes object fields in obj which are not specified in s. It skips TypeMeta
// and ObjectMeta fields if XEmbeddedResource is set to true, or for the root if isResourceRoot=true,
// i.e. it does not prune unknown metadata fields.
// It returns the set of fields that it prunes if opts.TrackUnknownFieldPaths is true
func PruneWithOptions(obj interface{ … }

// Prune is equivalent to
// PruneWithOptions(obj, s, isResourceRoot, structuralschema.UnknownFieldPathOptions{})
func Prune(obj interface{ … }

var metaFields …

func prune(x interface{ … }

func skipPrune(x interface{ … }